package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

/**
 * 2025/5/8 9:53
 */
@Service
public class SetmealServiceImpl implements SetmealService {

    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;

    @Override
    @Transactional
    public void saveWithDish(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        //1.先插入套餐
        //2.插入套餐-菜品关系表
        setmealMapper.insert(setmeal);
        setmealDTO.getSetmealDishes().forEach(setmealDish -> {
            setmealDish.setSetmealId(setmeal.getId());
            setmealDishMapper.insert(setmealDish);
        });

    }

    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(),setmealPageQueryDTO.getPageSize());

        Page<SetmealVO> page = setmealMapper.pageQuery(setmealPageQueryDTO);

        return new PageResult(page.getTotal(), page.getResult());
    }

    @Override
    public SetmealVO getByIdWithDish(Long id) {

        Setmeal setmeal = setmealMapper.getById(id);
        SetmealVO setmealVO = new SetmealVO();
        BeanUtils.copyProperties(setmeal,setmealVO);
        List<SetmealDish> setmealDish = setmealDishMapper.getBySetmealId(id);
        setmealVO.setSetmealDishes(setmealDish);
        return setmealVO;
    }

    @Transactional
    @Override
    public void updateWithDish(SetmealDTO setmealDTO) {
        //1.修改套餐表
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmealMapper.update(setmeal);
        //2.删除套餐-菜品关系表
        setmealDishMapper.deleteBySteamId(setmealDTO.getId());
        //3.重新插入套餐-菜品关系数据
        setmealDTO.getSetmealDishes().forEach(setmealDish -> {
            setmealDish.setSetmealId(setmealDTO.getId());
            setmealDishMapper.insert(setmealDish);
        });
    }

    @Override
    public void deleteBatch(List<Long> ids) {
        //1. 判断套餐状态，是否可以删除，如果启售中不可以删除
        //2. 删除套餐表中的数据
        //3. 删除套餐-菜品关系表中的数据
        for (Long id : ids) {
            Setmeal setmeal = setmealMapper.getById(id);
            if (setmeal.getStatus() == StatusConstant.ENABLE) {
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
            setmealMapper.deleteById(id);
            setmealDishMapper.deleteBySteamId(id);
        }
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Setmeal setmeal = Setmeal.builder()
                .status(status)
                .id(id)
                .build();
        setmealMapper.update(setmeal);
    }
    /**
     * 条件查询
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}
